Valtel Communication Services bases its offerings on the early work of Dr. Stephen Yarberry which began in the late 1980s. His interest in simulation and optimization led to fundamental breakthroughs in modeling real-world telecommunications networks. These advances make it possible to model large networks & perform detailed analysis in a practical time-frame. After a number of service engagements as a sole proprietor, on February 1, 2000, Dr. Yarberry started Valtel Communications Services, LLC.